instruction: Is the next sentence syntactically and semantically acceptable?

They prefer for Mary to leave.
OPTIONS:
- unacceptable
- acceptable

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

I've never seen a man taller than my mother.
OPTIONS:
- unacceptable
- acceptable

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

Jenny has eaten a cake.
OPTIONS:
- unacceptable
- acceptable

response: acceptable


instruction: Is the next sentence syntactically and semantically acceptable?

Willy is taller than Bill by as much as it is believed that Joe is taller than Dan.
OPTIONS:
- unacceptable
- acceptable

response:
acceptable